CONTENTS. 
CATALOGUE OF THE BoTANICAL Liprary or JouN DONNELL SMITH, PRESENTED 
IN 1905 TO THE SMITHSONIAN INSTITUTION...............-.-.-.-.---------- 
THe LecyTHipacear or Costa Rica. By Henry Pittier.................... 
Tonpuzia, A New Genus or APOCYNACEAE FROM CENTRAL AMERICA. By 
Henry Pittier..........0..000 00000 eee 
A COLLECTION OF PLANTS FROM THE Vicinity oF LA GuaIRA, VENEZUELA. By 
J. R. Johnston. 2... 2.2.2 ee cee eee ee eee 
Types or AMERICAN GRaAssES: A StTupyY OF THE AMERICAN SPECIES OF 
GRASSES DrscriIBED BY LINN®US, GRONOVIUS, SLOANE, SWARTZ, AND 
Micuaux. By A. 8. Hitchcock.................20..0.2202020220000222200 000 ee 
Introduction. 2.0... 0.0... ee eee 
The American grasses described by Linneeus..............2....0.....-.-. 
The grasses of Gronovius’s Flora Virginica................-...-.--------- 
The grasses of Sloane’s History of Jamaica......................22....... 
The West Indian grasses described by Swartz... ....................2.. 
The grasses of Michaux’s Flora Boreali-Americana...................... 
List of new names and those replacing names in current use... .......... 
THE MEXICAN AND CENTRAL AMERICAN SPECIES OF Sapium. By Henry Pittier. 
Introduction.................2-2 2222022222 e eee bee eee eee 
Descriptions of species... ....2...2...20-020-0-0 22022022 
New ork Norewortuy PLANTS FROM COLOMBIA AND CENTRAL AMERICA. By 
Henry Pittier...........2220.2... 222.2222 0022222 eee 
CATALOGUE OF THE GRASSES OF CuBA. By A.S. Hitchcock. ............. 
Introduction.............2.-.-.-.22 22020222202 
Key to the genera... .......2..222-2 22-0020 ee 
Catalogue of genera and species................-.2.222----0020 022-22 ee 
Grasses of Grisebach’s catalogue............0....22..022--2002-0.002-202-- 
Grasses of Sauvalle’s Flora Cubana... ..........0.-0..0...0..-..-.2--2--2-- 
Grasses collected in Cuba by Wright, arranged by numbers. ............. 
List of new genera and species and new names...................-.-...-- 
Srupres of MEXICAN AND CENTRAL AMERICAN PLants—No.6. By J. N. 
Introductory notes...... 2.2.22... 200000222 
Cycadaceae. .. 2... eee 
A new species of Dioon............20 002220 ee 
Gnetaceae. 22.2... ee 
A new species of Beaucarnea.............0.20000.2--5000-------22-. 
A new species of Beschorneria..............-.-0...-.--5-0.-2------0-- 
Rafflesiaceae...... 00202202 ee eee eee 
The North American species of Pilostyles. 2.2. .....0...0...-0........ 
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